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China tests home-grown coal refuge chamber at Changcun mine

International Mining | April 12, 2011 | 1:18 pm Energy China Coal 

Lu’an Group, a large Shanxi-based coal producer, completed what was, according to state newsletter People’s Daily Online, China’s first manned test of an underground refuge chamber on April 10. A team of 80 miners, rescue workers and researchers stayed in a permanent...

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